CERULLI, Raffaele; FINK, Andreas; GENTILI, Monica. Extensions of the minimum labelling spanning tree problem. Journal of Telecommunications and Information Technology, [S. l.], v. 26, n. 4, p. 39–45, 2006. DOI: 10.26636/jtit.2006.4.396. Disponível em: https://jtit.pl/jtit/article/view/396. Acesso em: 24 apr. 2026.